Hack-saw frame



IN-6314mm.

G LUKE HACK SAW FRAME. No. 541,442.

Patented June 18, 1895.

INVENTOI? ///S ATTORNEY.

STAT-es PATENT pr on.

CHARLES LUKE, OF MILFORD, CONNECTICUT, ASSIGNOR TO GEORGE T.

BRISTOL AND GEORGE L. ESTES, OF ROCHESTER, NEWV YORK.

HACK-SAW FRAM E.

SPECIFICATION forming part of Letters Patent No. 541,442, dated June 18, 1895. Application filed October 16, 1894. Serial No. 525,456. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARI ES LUKE, a citizen of the United States, and a resident of Milford, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Hack-Saw Frames, of which the following is a specification.

My invention relates to an improvement in hack saw frames and particularly to the mechanism for attaching and maintaining the saw blade thereon, and it is readily adapted to any style or form of frame.

To enable others to fully understand my invention reference is had to the accompanying drawings, in which Figure 1- represents a side elevation of a saw-frame and saw attached thereto by my improved clip-fastenings, the one on the forward or adjustable spindle being stationary and the one on the handle-spindle arranged to swing on a pivotal support to admit the saw-blade; and Fig. 2 is a detail broken side elevation of the saw and the two end spindles to which the same is supported on suitable pins for that purpose, a broken dotted section of a-saw depending from the pin on the movable spindle, it being the first position it will assume in attaching it to the frame, showing, also, the rear clip raised to attach the opposite end of the saw blade to the stationary spindle. Fig. 3 is an enlarged broken detail view of the handle or stationary spindle, looking in the direction of arrow a, Fig. 1. Fig. 4 is an eularged detail view of the movable spindle,

- looking in the direction of arrow a, Fig. 1.

Fig. 5 is an enlarged broken detail view of the stationary-spindle movable clip, shown in a dotted raised position and also in full lines, embracing a section of a saw-blade. Fig. 6 is a detail end view of the swinging clip and arrow 0, Fig. 1.

Its construction and operation are as follows:

1 represents an ordinary hack-saw frame;

'2, the handle'mounted on the outer projecting end of the spindle 3. 4 is a movable spindle located, as usual, i the forward part of the frame and having a threaded end carrying the tightening thumb not 5. The ends of the spindles 3 and 4, Figs. 3 and 4, are'cut away so as to leave the fioors d. e. The clips 6 and 7 are each provided with the U shape endsf. and g. forming the slots h. and 'i. to embrace the saw blade, as shown at Figs. 6 and 7. The base pieces of such clips rest on the floors d. and e. of the frame spindles 3 and 4. The clip attached to spindle 4 is. preferably rigid or immovable; while the clip on the spindle 3 is arranged to swing on the reduced portion or shank of the see also Fig. 5, against which the end n of the clip 6 may be cammed when said clip is in a horizontal position, as shown in Figs. 1 and 5.

To attach a saw to the frame the clip 6 is first tilted back, as shown at Fig. 2, or by the dotted position Fig. 5, and the forward spindle 4 loosened by means of its nut 5, and the saw 9, by means of the hole in its end, is hung pendent from the pin 8, see dotted position Fig. 2, then swung within the opening 2' of clip 7 into the horizontal position, and the opposite end mounted upon pin 8. The clip 6 is then dropped into the horizontal position shown at Figs. 1 and 5 and is firmly held there by means of the cam feature of its rear end engaging the shoulder m of the spindle 3, before mentioned.

It will be observed that the ends of the saw rest against the face of the clips and not against any portion of the spindles of the frame.

This feature, while not absolutely es- IOO sists in the use of the U shape clips for maintaining the saw blade upon its end-supporting pins. Also, While I show one of said clips held stationary to its spindle and the other movable thereon, and consider this the preferable method, I hold myself at liberty to arrange both of said clips so that they may both be tilted, if desired.

I hold that a device having a support to to embrace the outer surface of the saw blade 20 mounted on such saw supports, saw-support ing pins, said U shape clips arranged to em brace the outer surface of the saw and thus maintain it upon its supporting pins, as set forth.

2. The herein described improvements in hack-saw frames, comprising in combination, a frame carrying 'saw supports and between which the saw blade is suspended, U shape clips on said saw supports, saw-supporting pins projecting through the base piece of the said supports, one of said U shape clips held stationary, the other arranged to be tilted upon one of the said supporting pins so as to admit the saw thereto, and when tilted into a horizontal position to embrace the saw which, in combination with the stationary U shape. clip will maintain the saw in operative position and means for locking said movable clip in its horizontal position, as described and for the purpose set forth.

Signed at New Haven, in the county of New Haven and State of Connecticut, this 27th day of September, A. D. 180%.

CIIA RLES LU K E.

lVitnesses:

J OSEPI-I SHELDON, FRANK P. CLARK. 

